/*

   BLIS
   An object-based framework for developing high-performance BLAS-like
   libraries.

   Copyright (C) 2014, The University of Texas at Austin
   Copyright (C) 2019-2021, Advanced Micro Devices, Inc. All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are
   met:
    - Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    - Neither the name of The University of Texas nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#ifdef WIN32
#include <io.h>
#else
#include <unistd.h>
#endif
#include "blis.h"

//#define FILE_IN_OUT
//#define PRINT
//#define MATRIX_INITIALISATION

// uncomment to enable cblas interface
//#define CBLAS

int main( int argc, char** argv )
{
        obj_t a, b, c;
        obj_t c_save;
        obj_t alpha, beta;
        dim_t m, n, k;
        inc_t lda, ldb, ldc;
        num_t dt;
        inc_t r, n_repeats;
        trans_t  transa;
        trans_t  transb;
        f77_char f77_transa;
        f77_char f77_transb;

        double dtime;
        double dtime_save;
        double gflops;

        //bli_init();
        //bli_error_checking_level_set( BLIS_NO_ERROR_CHECKING );

        n_repeats = 300;

        //dt = BLIS_FLOAT;
        dt = BLIS_DOUBLE;
        //dt = BLIS_SCOMPLEX;
        //dt = BLIS_DCOMPLEX;

        const char stor_scheme = 'C';

        transa = BLIS_NO_TRANSPOSE;
        transb = BLIS_NO_TRANSPOSE;

        bli_param_map_blis_to_netlib_trans( transa, &f77_transa );
        bli_param_map_blis_to_netlib_trans( transb, &f77_transb );

        
	printf("BLIS Library version is : %s\n", bli_info_get_version_str());

#ifdef FILE_IN_OUT
        FILE* fin = NULL;
	FILE* fout = NULL;
        if (argc < 3){
            printf("Usage: ./test_gemm_XX.x input.csv output.csv\n");
            exit(1);
        }
        fin = fopen(argv[1], "r");
        if (fin == NULL){
            printf("Error opening the file %s\n", argv[1]);
            exit(1);
        }
        fout = fopen(argv[2], "w");
        if (fout == NULL){
            printf("Error opening output file %s\n", argv[2]);
            exit(1);
        }
        fprintf(fout, "m\t k\t n\t cs_a\t cs_b\t cs_c\t gflops\n");
        printf("~~~~~~~~~~_BLAS\t m\t k\t n\t cs_a\t cs_b\t cs_c \t gflops\n");

        while (fscanf(fin, "%lld %lld %lld %lld %lld %lld\n", &m, &k, &n, &lda, &ldb, &ldc) == 6)
        {
	    // dimensions should not be greater than leading dimensions
            // These are valid only when Op(A) = n and op(B) = n
            if( (stor_scheme == 'C') || (stor_scheme == 'c') ) {
                if ((m > lda) || (k > ldb) || (m > ldc)) continue; 
            }else if( (stor_scheme == 'R') || (stor_scheme == 'r') ) {
		// leading dimension should be greater than number of cols
                if ((k > lda) || (n > ldb) || (n > ldc)) continue;
	    }else {
                printf("Invalid Storage type\n");
                continue;
            }
#else
        dim_t p, p_begin, p_end, p_inc;
        dim_t m_input, n_input, k_input;
        p_begin = 200;
        p_end   = 2000;
        p_inc   = 200;

        m_input = n_input = k_input = -1;
        for ( p = p_begin; p <= p_end; p += p_inc )
        {
            if ( m_input < 0 ) m = p * ( dim_t )abs(m_input);
            else               m =     ( dim_t )    m_input;
            if ( n_input < 0 ) n = p * ( dim_t )abs(n_input);
            else               n =     ( dim_t )    n_input;
            if ( k_input < 0 ) k = p * ( dim_t )abs(k_input);
            else               k =     ( dim_t )    k_input;
            
	    if( (stor_scheme == 'C') || (stor_scheme == 'c') ) {
	        lda = m; ldb = k, ldc = m;
            }else if( (stor_scheme == 'R') || (stor_scheme == 'r') ) {
	        lda = k; ldb = n, ldc = n;
            }
#endif

            bli_obj_create( dt, 1, 1, 0, 0, &alpha);
            bli_obj_create( dt, 1, 1, 0, 0, &beta );

            siz_t elem_size = bli_dt_size( dt );

            lda = bli_align_dim_to_size( lda, elem_size, BLIS_HEAP_STRIDE_ALIGN_SIZE );
            ldb = bli_align_dim_to_size( ldb, elem_size, BLIS_HEAP_STRIDE_ALIGN_SIZE );
            ldc = bli_align_dim_to_size( ldc, elem_size, BLIS_HEAP_STRIDE_ALIGN_SIZE );

            // Will verify the leading dimension is powers of 2 and add 64bytes.
            inc_t n_bytes = lda*sizeof(dt);

            if((n_bytes!=0) && !(n_bytes&(n_bytes-1)))// check whether n_bytes is power of 2.
               lda += BLIS_SIMD_ALIGN_SIZE/sizeof(dt);

            n_bytes = ldb*sizeof(dt);
            if((n_bytes!=0) && !(n_bytes&(n_bytes-1)))// check whether n_bytes is power of 2.
               ldb += BLIS_SIMD_ALIGN_SIZE/sizeof(dt);

            n_bytes = ldc*sizeof(dt);
            if((n_bytes!=0) && !(n_bytes&(n_bytes-1)))// check whether n_bytes is power of 2.
               ldc += BLIS_SIMD_ALIGN_SIZE/sizeof(dt);

            if( (stor_scheme == 'C') || (stor_scheme == 'c') )
            {
                // Col-major Order
                bli_obj_create( dt, m, k, 1, lda, &a );
                bli_obj_create( dt, k, n, 1, ldb, &b );
                bli_obj_create( dt, m, n, 1, ldc, &c );
                bli_obj_create( dt, m, n, 1, ldc, &c_save );
            }
            else if( (stor_scheme == 'R') || (stor_scheme == 'r') )
            {
                // Row-major Order
                bli_obj_create( dt, m, k, lda, 1, &a );
                bli_obj_create( dt, k, n, ldb, 1, &b );
                bli_obj_create( dt, m, n, ldc, 1, &c );
                bli_obj_create( dt, m, n, ldc, 1, &c_save );
            }
            else
            {
                printf("Invalid Storage type\n");
                continue;
            }

#ifdef MATRIX_INITIALISATION
            bli_randm( &a );
            bli_randm( &b );
            bli_randm( &c );
#endif
            bli_obj_set_conjtrans( transa, &a);
            bli_obj_set_conjtrans( transb, &b);
            bli_setsc(  (0.9/1.0), 0.2, &alpha );
            bli_setsc( -(1.1/1.0), 0.3, &beta );

            bli_copym( &c, &c_save );
            dtime_save = DBL_MAX;
            for ( r = 0; r < n_repeats; ++r )
            {
                bli_copym( &c_save, &c );
                dtime = bli_clock();

#ifdef BLIS
                bli_gemm( &alpha,
                          &a,
                          &b,
                          &beta,
                          &c );
#else
                f77_int lda, ldb, ldc;
                f77_int  mm     = bli_obj_length( &c );
                f77_int  kk     = bli_obj_width_after_trans( &a );
                f77_int  nn     = bli_obj_width( &c );
#ifdef CBLAS
                enum CBLAS_ORDER     cblas_order;
                enum CBLAS_TRANSPOSE cblas_transa;
                enum CBLAS_TRANSPOSE cblas_transb;

                if ( bli_obj_row_stride( &c ) == 1 ){
                    cblas_order = CblasColMajor;
                }else{
                    cblas_order = CblasRowMajor;
                }

                if( bli_is_trans( transa ) )
                  cblas_transa = CblasTrans;
                else if( bli_is_conjtrans( transa ) )
                  cblas_transa = CblasConjTrans;
                else
                  cblas_transa = CblasNoTrans;

                if( bli_is_trans( transb ) )
                  cblas_transb = CblasTrans;
                else if( bli_is_conjtrans( transb ) )
                  cblas_transb = CblasConjTrans;
                else
                  cblas_transb = CblasNoTrans;
#else
                f77_char f77_transa;
                f77_char f77_transb;
                bli_param_map_blis_to_netlib_trans( transa, &f77_transa );
                bli_param_map_blis_to_netlib_trans( transb, &f77_transb );
#endif
                if( (stor_scheme == 'C') || (stor_scheme == 'c') ){
                    lda    = bli_obj_col_stride( &a );
                    ldb    = bli_obj_col_stride( &b );
                    ldc    = bli_obj_col_stride( &c );
                } else {
                    lda    = bli_obj_row_stride( &a );
                    ldb    = bli_obj_row_stride( &b );
                    ldc    = bli_obj_row_stride( &c );
		}

                if ( bli_is_float( dt ) )
                {
                    float*   alphap = bli_obj_buffer( &alpha );
                    float*   ap     = bli_obj_buffer( &a );
                    float*   bp     = bli_obj_buffer( &b );
                    float*   betap  = bli_obj_buffer( &beta );
                    float*   cp     = bli_obj_buffer( &c );
#ifdef CBLAS
                    cblas_sgemm( cblas_order,
                                 cblas_transa,
                                 cblas_transb,
                                 mm,
                                 nn,
                                 kk,
                                 *alphap,
                                 ap, lda,
                                 bp, ldb,
                                 *betap,
                                 cp, ldc
                                 );
#else
                    sgemm_( &f77_transa,
                            &f77_transb,
                            &mm,
                            &nn,
                            &kk,
                            alphap,
                            ap, (f77_int*)&lda,
                            bp, (f77_int*)&ldb,
                            betap,
                            cp, (f77_int*)&ldc );
#endif
                }else if ( bli_is_double( dt ) )
                {
                    double*  alphap = bli_obj_buffer( &alpha );
                    double*  ap     = bli_obj_buffer( &a );
                    double*  bp     = bli_obj_buffer( &b );
                    double*  betap  = bli_obj_buffer( &beta );
                    double*  cp     = bli_obj_buffer( &c );
#ifdef CBLAS
                    cblas_dgemm( cblas_order,
                                 cblas_transa,
                                 cblas_transb,
                                 mm,
                                 nn,
                                 kk,
                                 *alphap,
                                 ap, lda,
                                 bp, ldb,
                                 *betap,
                                 cp, ldc
                                 );
#else
                    dgemm_( &f77_transa,
                            &f77_transb,
                            &mm,
                            &nn,
                            &kk,
                            alphap,
                            ap, (f77_int*)&lda,
                            bp, (f77_int*)&ldb,
                            betap,
                            cp, (f77_int*)&ldc );
#endif
                }else if ( bli_is_scomplex( dt ) )
                {
                    scomplex*  alphap = bli_obj_buffer( &alpha );
                    scomplex*  ap     = bli_obj_buffer( &a );
                    scomplex*  bp     = bli_obj_buffer( &b );
                    scomplex*  betap  = bli_obj_buffer( &beta );
                    scomplex*  cp     = bli_obj_buffer( &c );
#ifdef CBLAS
                    cblas_cgemm( cblas_order,
                                 cblas_transa,
                                 cblas_transb,
                                 mm,
                                 nn,
                                 kk,
                                 alphap,
                                 ap, lda,
                                 bp, ldb,
                                 betap,
                                 cp, ldc
                                 );
#else
                    cgemm_( &f77_transa,
                            &f77_transb,
                            &mm,
                            &nn,
                            &kk,
                            alphap,
                            ap, (f77_int*)&lda,
                            bp, (f77_int*)&ldb,
                            betap,
                            cp, (f77_int*)&ldc );
#endif
                }else if ( bli_is_dcomplex( dt ) )
                {
                    dcomplex*  alphap = bli_obj_buffer( &alpha );
                    dcomplex*  ap     = bli_obj_buffer( &a );
                    dcomplex*  bp     = bli_obj_buffer( &b );
                    dcomplex*  betap  = bli_obj_buffer( &beta );
                    dcomplex*  cp     = bli_obj_buffer( &c );
#ifdef CBLAS
                    cblas_zgemm( cblas_order,
                                 cblas_transa,
                                 cblas_transb,
                                 mm,
                                 nn,
                                 kk,
                                 alphap,
                                 ap, lda,
                                 bp, ldb,
                                 betap,
                                 cp, ldc
                                 );
#else
                    zgemm_( &f77_transa,
                            &f77_transb,
                            &mm,
                            &nn,
                            &kk,
                            alphap,
                            ap, (f77_int*)&lda,
                            bp, (f77_int*)&ldb,
                            betap,
                            cp, (f77_int*)&ldc );
#endif
                }
#endif

#ifdef PRINT
                bli_printm( "a", &a, "%4.1f", "" );
                bli_printm( "b", &b, "%4.1f", "" );
                bli_printm( "c", &c, "%4.1f", "" );
                bli_printm( "c after", &c, "%4.1f", "" );
                exit(1);
#endif
                dtime_save = bli_clock_min_diff( dtime_save, dtime );
            }//nrepeats

            gflops = ( 2.0 * m * k * n ) / ( dtime_save * 1.0e9 );
            if ( bli_is_complex( dt ) ) gflops *= 4.0;

#ifdef BLIS
            printf("data_gemm_blis" );
#else
            printf("data_gemm_%s", BLAS );
#endif


#ifdef FILE_IN_OUT

            printf("%6lu \t %4lu \t %4lu \t %4lu \t %4lu \t %4lu \t %6.3f\n", \
                  ( unsigned long )m,( unsigned long )k,( unsigned long )n,
                  (unsigned long)lda,(unsigned long)ldb,(unsigned long)ldc,gflops);

            fprintf(fout, "%6lu \t %4lu \t %4lu \t %4lu \t %4lu \t %4lu \t %6.3f\n", \
                   ( unsigned long )m,( unsigned long )k,( unsigned long )n,
                   (unsigned long)lda,(unsigned long)ldb,(unsigned long)ldc,gflops);
            fflush(fout);
#else
            printf( "( %2lu, 1:4 ) = [ %4lu %4lu %4lu %7.2f ];\n",
                   ( unsigned long )(p - p_begin)/p_inc + 1,
                   ( unsigned long )m,( unsigned long )k,
                   ( unsigned long )n, gflops );
#endif
            bli_obj_free( &alpha );
            bli_obj_free( &beta );

            bli_obj_free( &a );
            bli_obj_free( &b );
            bli_obj_free( &c );
            bli_obj_free( &c_save );
        }//while

        //bli_finalize();
#ifdef FILE_IN_OUT
        fclose(fin);
        fclose(fout);
#endif
        return 0;
}
